class Settings():
	"""存储所有的设置类"""

	def __init__(self):
		"""初始化游戏设置"""
		#	 屏幕设置
		self.screen_width = 1200
		self.screen_height = 800
		self.bg_color = (230,230,230)
		self.ship_speed_factor = 5

		#子弹设置
		self.bullet_speed_factor = 3
		self.bullet_width = 3
		self.bullet_height = 15
		self.bullet_color = (60, 60, 60)
		self.bullets_allowed = 3

		#外星人设置
		self.alien_speed_factor = 1
		self.fleet_drop_speed = 10
		# fleet_drection 为1表示向右移，-1表示向左移
		self.fleet_direction = 1
